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Two P2X1 receptor transcripts able to form functional channels are present in most human monocytes

dc.contributor.authorLópez López, Cintya del Refugio
dc.contributor.authorJaramillo Polanco, Josue Obed
dc.contributor.authorPortales Pérez, Diana Patricia
dc.contributor.authorGómez Coronado, Karen Sarahí
dc.contributor.authorRodríguez Meléndez, Jessica Gabriela
dc.contributor.authorCortés García, Juan Diego
dc.contributor.authorEspinosa Luna, Rosa
dc.contributor.authorMontaño Ramírez, Luis Manuel
dc.contributor.authorBarajas López, Carlos
dc.date.accessioned2019-08-09T22:22:37Z
dc.date.available2019-08-09T22:22:37Z
dc.date.issued2016
dc.identifier.citationCintya López-López, Josue Jaramillo-Polanco, Diana P. Portales-Pérez, Karen S. Gómez-Coronado, Jessica G. Rodríguez-Meléndez, Juan D. Cortés-García, Rosa Espinosa-Luna, Luis M. Montaño, Carlos Barajas-López, Two P2X1 receptor transcripts able to form functional channels are present in most human monocytes, European Journal of Pharmacology, Volume 793, 2016, Pages 82-88.
dc.identifier.urihttp://hdl.handle.net/11627/5018
dc.description.abstract"To characterize the presence and general properties of P2X1 receptors in single human monocytes we used RT-PCR, flow cytometry, and the patch-clamp and the two-electrode voltage-clamp techniques. Most human monocytes expressed the canonical P2X1 (90%) and its splicing variant P2X1del (88%) mRNAs. P2X1 receptor immunoreactivity was also observed in 70% of these cells. Currents mediated by P2X1 (EC50=1.9±0.8 µm) and P2X1del (EC50 >1000 µm) channels, expressed in Xenopus leavis oocytes, have different ATP sensitivity and kinetics. Both currents mediated by P2X1 and P2X1del channels kept increasing during the continuous presence of high ATP concentrations. Currents mediated by the native P2X1 receptors in human monocytes showed an EC50=6.3±0.2 µm. Currents have kinetics that resemble those observed for P2X1 and P2X1del receptors in oocytes. Our study is the first to demonstrate the expression of P2X1 transcript and its splicing variant P2X1del in most human monocytes. We also, for the first time, described functional homomeric P2X1del channels and demonstrated that currents mediated by P2X1 or P2X1del receptors, during heterologous expression, increased in amplitude when activated with high ATP concentrations in a similar fashion to those channels that increase their conductance under similar conditions, such as P2X7, P2X2, and P2X4 channels."
dc.publisherElsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectHeterologous expression
dc.subjectP2X receptors
dc.subjectBlood cells
dc.subjectPatch clamp
dc.subjectP2X1del receptors
dc.subject.classificationBIOLOGÍA MOLECULAR
dc.titleTwo P2X1 receptor transcripts able to form functional channels are present in most human monocytes
dc.typearticle
dc.identifier.doihttps://doi.org/10.1016/j.ejphar.2016.10.033
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional